Refrigerating apparatus



Aug.z5,1931. G A.JEWELL 1,820,806

REFRIGERATING AP-PARATUS n Filed Jan. 5o. 1951 2 sheets-sheet 1 'wf/)WMM nvVENToR. eorjeldwell A TTORNEY.

Aug- 25, 193l- G. A. JEWELL 1,820,806

REFRGER'ATING APPARATUS Filed Jan. 30. 1931 2 SheeLs--Sheerl 2 wmwmwwmm 6" z 4" 122ml 1 17 1 '12 11 .4

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Patented Aug. 25, 1931 raz/0,806

UNITED l STATES PATENT OFFICE I GEORGE A. JEWELL, F WILSON, NORTH CAROLINA, ASSIGNOR TO JHACIKNEY BROS.

I BODY-CO., A CORPORATION 0F NORTH CAROLINA v REFRIGERATING APPARATUS This invention relates to refrigerating apparatus of the type employing solid carbon dioxide or the like as a refrigerant.

j A further object of the invention is to pro-`Y vide a refrigerating apparatus of the character aforesaid wherein the container fdr the articles to be refrigerated is entirely enveloped by the gas during the circulation of the latter, and wherein the warmer portion of the circulating gas is directed back to the refrigerant bunker, thereby providing for continuous circulation of the gas and completely eliminating dead spots around the container.

A further object of the invention is to provide a refrigerating apparatus of the character aforesaid wherein the water formedat the top of vthe gas circulating space may be trapped at the top of the container and wiped olf before the same collects at the bottom ofthe space, thereby preventing any obstruction to the circulation of the gas by the freezing of water beneath the container.

With the foregoing and other objects in view, the invention consists of the novel .con-4 struction, combination and arrangement of parts as hereinafter more particularly described, and illustrated in the accompanying drawing, but it is to be understood that the description and drawing are to be taken as illustrative rather than limitative.

In the accompanying drawings in which like numerals are employed to designate like parts throughout the several views: Figure 1 is a central vertical section through a refrigerating apparatus in accordance with this invention.

Application led January 30, 1931. Serial No. 512,419.

Figure 2 is a horizontal section taken at a point indicated by the line 2--2 of Figure 1. Figure 3 is a horizontal section taken at a point indicated by the line 3-3 of Figure 1. Figure 4 is a horizontal section taken at a point indicated by the line 4-4 of Figure 1. Figurev is a horizontal section taken on the line 5 5 of Figure 2.

Referring to the drawings in detail, the numeral 1 indicates generally an insulating housing which may be of any well known construction, and which as shown consists of outer and inner walls 2 and 3 respectively having interposed therebetween a body of insulating material indicated at 4;., The container 1 is provided with a suitable door 5. Disposed within the housing 1 is a metal container 6 which is adapted to have stored therein articles to be refrigerated. The container 6 is provided with a door opening 7 in alignment with the door 5. Adjacent the door opening 7, the wall of the container 6 is flanged and secured in any suitable manner to an inwardly extending Harige 7 formed yon the housing 1 in encircling relation to the opening therein for the door 5; The container 6 is spaced from the side, end, and bottom walls of the housingl by means Aof suitable blocks 8, the container resting on such of the blocks as are disposed between the bottom thereof and the bottom wall of the housing. The side and end walls of the container 6 -project upwardly beyond the top wall thereof to provide a continuous flange 9.

Extending through the top wall of the housing 1 and into the container 6 is a bunker 10 which is adapted to contain a block of solid carbon dioxide or the like. Preferably the bunker 10 will be formed with an open top and provided with a suitably insulated, removable closure member 11. Inspaced relation to the bottom thereof, the bunker 10 is provided with a discharge port 12 which opens through an end iwall of the container' 6, and upon the opposite side thereof from the discharge port 12, the bunker 10 is provided with a return port 13 which is located between the top walls of the container 6 and housing 1. Asl clearlyV shown in Figure 2, the bunker 10 .is disposed adjacent an end wall of the"con tainer 6 and centrally with res ect tothe side walls thereof. v

cated on the top wall of the container 6 are a pair of deflectors 14' which extend in converging relation from upper corners' of the container toward thebunker 10, terminat- I i ing in spaced relation to the latter. In spaced relation to the bunker 10, and totheends of the -deflectors 14 adjacent thereto, are a 10 pair of oppositely disposed deflectors 15 which extend in longitudinal alignment from the side edges of the container. Preferably the deectors 14 and 15i are of channeled construction as will be observed from refer- 15 ence to Figure 4 wherein the deflectors 14 are shown in section. The deflectors 14 and .15 are substantially lequal in'height to the space between the container 6 land ,the top wall ofthe housing l and serve asspacers within such space. The spaced relation of the delectors to each other and to the bunker 10 provide passages adjacent the port 13.

' Centrallywof the top wall ofthe housing 1- theinsulating material thereof has embedded therein a receptacle 16 which is-subs'tantially ^in the shape of an inverted cup. Communication is established between the interior of the receptacle 16 and the space between the top'walls of the container andl housing hy means of an opening 17v formed inthe inner wall ofthe top of the housing. Opening through the receptacle 16-and through the outer face of the housing is a vent pipe 18. bonAv dioxide lgas emanating from 'the rsolid block contained within the bunker 10 is discharged through the port 12 into the space between the container 6 and housing 1. The gas descends to the bottom of such space, thence along the bottom of the container and upwardly at thev sides and one end of the latter tothe top of the space. Owing to the disposition of 'the defiectors 14 and 15, the gas flowing to the top -of the space will tend to converge toward the' bunker 10, as indicated l du by arrows in Figure 2, and will be drawnthrough the return port 13 by the slight sucl tion createdy therethrough by the escape of 5.0 the newlyemanating gas. through the discharge port 12. Thus it willbe seen that the gas' emanating from the refrigerant block within the Abunker will be contlnuously cir- 5s culated around the container 6 and returnedA surrounding the container has expanded sufto the bunker. When the gas within the space ficiently to creep along the upper wall of the space, the -gas may escape through the openling 17 into the receptacle 16, thence through the vent pipe 18 to the outer air. The'escape thus provided eliminates the possibility of the discharge of gas into the space in excess ofthe amountP whch can safely be `confined within' the housing.

35 It isjto be noted that the construction of `pass through the deflectors and along op- In the operation of the apparatus, the cai-,

as such-changes fall within the scope lof the l bunker 1,0, entirely eliminates any dead spots above the container. The gas may freely posite sides thereof to the return port 13. The flange 9 formed at thp top of the container Gis spaced lfrom the top wallv of the housing a suilicient distance to permit the rising gas to flow freely thereover, but is of suiicient height' to prevent any water formed in the top of the space while defrosting from flowing down the sides and ends of the cntainer. v

In order that any water which collects on the top of the container may be readily re- `moved, the top wall of the container slopes slightly from all directions toward the passages adjacent the port 18, thereby causing such water to travel in a direction parallel to the liow of the gas. In this manner the water lwill drain into the bunker 10 from where it.

may be readily mopped up. In the event that water is permitted to collect within the bunker 10 to such a depth that it will overfiow vthrough the port 12, the overflow may be drawn .from the bottom of the gas space through a drain 19 provided for that purpose, thereby preventing any obstruction to the free passage of gas at the-bottom of the space by the freezing of watertherein.

VIt is thought that the many advantages of a refrigerating apparatus in accordance with this invention will be readily apparent,.and although the preferred embodiment of theinvention is as illustrated and described, it is to be understood that changes in theS details of construction may be resorted to, so long ioo invention as defined in the appended claims. .105

What I claim is 1. In arefrigerating apparatus, a container for articles to be refrigerated and adapted to be contained-within a housing in spaced reun lation to the walls of the latter, a` bunker adapted to contain solid carbon dioxide extending into the container, said bunker having a gas discharge port and further havinga gas return port in a higher plane'than the discharge port, and a plurality of deflectors seated on the container ,and each havin an endfthereof terminating. adjacent an in spaced` relation to said return port.

2. In a refrigerating apparatus, a container for articles vto be refrigerated and adapted to Abe contained within a'housing .in spaced relation t'o thewalls of the latter, a bunker adapted to containr solidv carbon dioxide extending into the container, said bunker having a gas discharge port and further y'having a gas return port in a higher plane than the discharge port, and a pair. of deiectors extending Iin converging relation from upper corners of the container toward i lo adapted to contain solid carbon dioxide ex-' said bunker, said delectors terminating in spaced relation to the bunker adjacent said return gas port.

3. In a refrigerating apparatus, a container for articles to bel refrigerated and adapted to be contained Within a housing in spaced relation to the Walls of the latter, a 'bunker adapted to contain solid carbon dioxide extending in'to the container, said bunker having a gas discharge port and further having a gas return port in a higher plane than the discharge port, a pair of delectors extending in converging relation from upper corners of the .container toward said bunker, said deflectors terminating in spaced relation to the bunker adjacent said return gas port, and a pair of longitudinally aligned deliectors extending from side edges of the top of the container and `terminating adjacent and in spaced relation to the converging pair of deflectors and said bunker.

4;. In a refrigerating app'aratusd container for articles to be refrigerated and adapted to be contained within a housing in spaced relation, to the walls of the latter, a bunker tending into the container, said bunker having a gas discharge port and further having a gas return port in a higher plane than the discharge-port, a pair of deflectors extending in converging relation from upper corners of the container toward said bunker, said deflectors terminating in spaced relation to the bunkeradjacent said return gas port, and a pair of longitudinally aligned delectors extending from side edges of the top of the container and terminating adjacent and in spaced relation to the converging pair of deflectors and said bunker, said delectors being of channeled construction to permit the gasto flow therethrough and along opposite sides thereof f l 5. Iri a refrigerating apparatus, a container for articles to'be refrigerated and adapted to bev contained within a-hous'ing in spaced relation to the walls of the latter, a bunker adapted to contain solid carbon dioxide extending into the container, said bunker having a gas discharge port and further having a gas return port in a higher plane'than the .discharge port, a pair of deflectors extending in converging relation from upper-corners er for articles to berefrigerated and adapted to be contained Within a housing in spaced relation to the -Walls of the latter, a bunker adapted to contain solid carbon dioxide extending into the container, said bunker having a gas discharge port and further having a gas return port in a higher plane than the discharge port, and a plurality of deflectors seated on the container and each having an end thereof terminating Vadjacent and in spaced relation to said return port, said container having its to formed with a continuous flange to provlde a Water trap.

7. In a refrigerating apparatus, an insulating housing, a contalner therein in spaced relation tothe Walls thereof to provide a gas space enveloping the container, a-solid carbon dioxide bunker extending through the housing and into the container, said bunker having a discharge port opening through the Wall of the container, said bunker further having a .gas return port located in a plane between the top Walls of the container and housing, a plurality of deflectors seated on the container and providin therebetween for the travel 0% gas along the top Wall of the container to the return port, and means'communicating with they top of the space between the container and housing -to be contained Within a housing in spaced relation to the Walls of the latter, a bunker adapted to contain solid carbon dioxide extending into the container, said bunker having a gas discharge port and further having a gas return port ina higher plane than the discharge port, and a plurality of deectors seated on the container and having their inner ends arranged in spaced relation to each other and to the bunker adjacent the return port to provide a lurality ofpassages adj acent the latter, sa1d container having its upper face sloping from the edges thereof tof ward said passages. In testimony whereof, I affix my signature hereto. Y

GEORGE A'. JEWELL.

of the container toward said bunker, said deectors terminating in spaced relation to the bunker adjacent said lreturn gas port,.and a pair of longitudinally `aligned deiectors extending'from side edges of the top of the container and terminating adjacent and in spaced relation to the converging pair of delectors and said bunker, Isaid return. port being disposed atthe opposite4 side ot the bunker 4from the discharge port for creating a draft through the return port by the escape of the gas through the discharge port.

6. In a refrigerating apparatus, a containpassageways lll. 

